SOL 4.7 & 4.8 Earth and Space Systems

Which of these often occur as the Earth’s crustal plates move?

• Hurricanes
• Floods
• Tornadoes
• Earthquakes

Which layer of Earth is the thinnest?

• Inner core
• Crust
• Outer core
• Mantle

The surface of the Moon is made up of —

• craters, highlands, and flat areas
• swirling gases
• large bodies of water
• a mixture of gases and water

Which of these takes about one year to complete?

• Earth to orbit the Sun
• The Sun to orbit Earth
• Earth to rotate on its axis
• The Moon to orbit Earth

The Apollo 11 mission was able to retrieve samples of the Moon’s surface because it was the first mission to have astronauts —

• land on the Moon
• orbit a planet
• return to Earth
• walk in space

Which of these best describes the Moon?

• Older than Earth
• Smaller than Earth
• Having the same climate as Earth
• Having the same atmosphere as Earth

Which of these describes rotation?

• Mercury goes around the Sun every 88 days.
• The Moon goes around Earth every 28 days.
• Earth orbits the Sun about every 365 days.
• Earth makes one turn on its axis every 24 hours.

 Earth makes a complete revolution around the Sun about once every —

• day
• year
• season 
• minute

Which of these activities is most likely to have a positive impact on the environment of Earth?

• Expanding neighborhoods
• Building factories
• Constructing highways
• Creating nature preserves

The motion of Earth around the Sun most affects the —

• timing of tides
• length of a month
• cycle of the seasons
• phases of the Moon